Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Mike Hettich"'
Publikováno v:
AIP Advances, Vol 8, Iss 12, Pp 125019-125019-14 (2018)
Attenuation of Rayleigh-type surface acoustic waves induced by grain-boundary scattering is studied experimentally and theoretically by an effective medium approach. A frequency domain opto-acoustic laboratory setup, capable of measuring a coherent R
Externí odkaz:
https://doaj.org/article/187c0a1c756b411e96861f90dc7f1d1c
Publikováno v:
Proceedings, Vol 56, Iss 1, p 31 (2020)
Pillar-shaped Gallium arsenide (GaAs) micromechanical resonators are fabricated, and the feasibility to measure the inside of the pillars in the axial direction with laser-induced GHz ultrasound based on picosecond ultrasonics is tested. Measurements
Externí odkaz:
https://doaj.org/article/bce864f001974122adcd1ac9ebe327ca
Publikováno v:
Applied Sciences, Vol 9, Iss 2, p 289 (2019)
A multiple quantum-well semiconductor saturable absorber mirror (MQW-SESAM) structure has been investigated by femtosecond pump-probe laser spectroscopy at a central wavelength of around 1050 nm. Coherent acoustic phonons are generated and detected o
Externí odkaz:
https://doaj.org/article/29f0c4cbb39444c1af045ab4ba493c15
Publikováno v:
Applied Sciences, Vol 7, Iss 8, p 822 (2017)
Many applications of thin films necessitate detailed information about their thicknesses and sound velocities. Here, we study SiO2/LiNbO3 layer systems by picosecond photoacoustic metrology and measure the sound velocities of the respective layers an
Externí odkaz:
https://doaj.org/article/1e1de1b8218d46aeac23457458f0fa23
Autor:
Martin Grossmann, Martin Schubert, Chuan He, Delia Brick, Elke Scheer, Mike Hettich, Vitalyi Gusev, Thomas Dekorsy
Publikováno v:
New Journal of Physics, Vol 19, Iss 5, p 053019 (2017)
We quantitatively study interfacial adhesion in a two-layer membrane system consisting of Al and Si with femtosecond time-resolved laser spectroscopy. High-frequency acoustic pulses in the sub-THz regime are utilized to characterize the membrane syst
Externí odkaz:
https://doaj.org/article/88e49b5db83b4b1b89120aa8d0a1e656
Publikováno v:
New Journal of Physics, Vol 19, Iss 1, p 013029 (2017)
The guiding of elastic waves in a two-dimensional graded phononic crystal plate is investigated. This effect is induced by the resonance coupling of attachments and matrix in a silicon pillar-substrate system and the resonance frequencies of guided s
Externí odkaz:
https://doaj.org/article/3edecf8be1704a8b8bee1b4bb31af92d
Autor:
Wolfgang Haderer, Edgar Scherleitner, Jens Gseller, Bettina Heise, Thomas Mitter, Martin Ryzy, Bernhard Reitinger, Mike Hettich
Publikováno v:
NDT & E International. 138:102868
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a564cfa2d246a960a630f4464bddc38f
https://doi.org/10.1016/j.ndteint.2023.102868
https://doi.org/10.1016/j.ndteint.2023.102868
Autor:
Christian Kerschbaummayr, Martin Ryzy, Bernhard Reitinger, Mike Hettich, Jan Džugan, Thomas Wydra, Edgar Scherleitner
Publikováno v:
2021 48th Annual Review of Progress in Quantitative Nondestructive Evaluation.
The macroscopic mechanical properties like yield-strength, ductility or hardness play an important role during the steel production and the design of new steel grades. The austenite grain size is an important parameter, which influences the final mic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9048af0d497620ec6bca243b42c34b7c
https://doi.org/10.1115/qnde2021-75223
https://doi.org/10.1115/qnde2021-75223
Autor:
Justinas Pupeikis, Sandro L. Camenzind, Mike Hettich, Francois Bruno, Alexander Nussbaum-Lapping, Patrice Camy, Abdelmjid Benayad, Matthias Golling, Christopher R. Phillips, Ursula Keller, Benjamin Willenberg, Carolin P. Bauer, Bertrand Audoin
Publikováno v:
Optics Express
Optics Express, Optical Society of America-OSA Publishing, 2021, 29 (22), pp.35735. ⟨10.1364/oe.440856⟩
Optics Express, Optical Society of America-OSA Publishing, 2021, 29 (22), pp.35735. ⟨10.1364/oe.440856⟩
We present a free-running 80-MHz dual-comb polarization-multiplexed solid-state laser which delivers 1.8 W of average power with 110-fs pulse duration per comb. With a high-sensitivity pump-probe setup, we apply this free-running dual-comb laser to p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::241fb48bb94320747dfea36ec35b9f9b
Publikováno v:
Photons Plus Ultrasound: Imaging and Sensing 2020.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ddd2603cbfbf8e1ce915529c610f1b8f
https://doi.org/10.1117/12.2543515
https://doi.org/10.1117/12.2543515